Gutenberg and the REST API, early May

This post originally appeared on make.wordpress/core.

Since I last wrote two weeks ago, we’re making progress! Key achievements for Gutenberg and the REST API include:

  • Support for who=authors was added to GET wp/v2/users, making it possible to accurately query for authors. WordPress, for better or for worse, defines an author as user_level!=0. See WordPress/gutenberg#6361 for the context on why we can’t add this logic client-side (#42202 for WordPress 4.9.6).
  • Improved performance for the _fields= query parameter (e.g. GET wp/v2/pages?_fields=id,title) by ensuring WordPress core will only process the fields requested for the response. Notably, this helps us avoid running the_content when we don’t need to be (#43874 for WordPress 4.9.7).
  • Minor enhancements to reflect existing WordPress behaviors:

The “Merge Proposal: REST API” GitHub milestone represents the distance we still need to close. Slowly, steadily, we’re bridging the gap, but we could use your help. Here are some of the issues we’re still working through:

  • To ensure all necessary data is available to Gutenberg, we’ve settled upon permitting unbounded per_page=-1 REST API requests for authorized users. This landed for GET wp/v2/users (WordPress/gutenberg#6627), is in-progress for GET wp/v2/(pages|blocks) (WordPress/gutenberg#6657), and needs to be addressed for categories, tags, and custom taxonomies. We also need to patch core with this enhancement (#43998 for WordPress 4.9.7?)
  • Capabilities can’t be processed directly client-side (WordPress/gutenberg#6361), so we’ve introduced a new targetSchema concept to communicate which actions a user can perform. See it in action with wp:action-sticky (WordPress/gutenberg#6529) and wp:action-assign-author (WordPress/gutenberg#6630). There are a few other actions we will need to work out, and then we’ll need to patch core (no ticket yet).
  • Adam is putting together an improved autosaves implementation (WordPress/gutenberg#6257) that I literally cannot wait to see complete. I’m sure he could use some help testing in the near future.
  • Felix is implementing a WP_REST_Search_Controller endpoint (WordPress/gutenberg#6489) to power the link search UI.

Join us tomorrow, Thursday, May 10 at 17:00 UTC in #core-restapi office hours if you’d like to chat through any questions you have.

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